CN102112698B - Load bearing assembly - Google Patents
Load bearing assembly Download PDFInfo
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- CN102112698B CN102112698B CN200980129721.XA CN200980129721A CN102112698B CN 102112698 B CN102112698 B CN 102112698B CN 200980129721 A CN200980129721 A CN 200980129721A CN 102112698 B CN102112698 B CN 102112698B
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- 239000012530 fluid Substances 0.000 claims abstract description 63
- 239000004020 conductor Substances 0.000 claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 claims abstract description 32
- 230000035515 penetration Effects 0.000 description 20
- 230000008878 coupling Effects 0.000 description 11
- 238000010168 coupling process Methods 0.000 description 11
- 238000005859 coupling reaction Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- 238000005553 drilling Methods 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 238000007789 sealing Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 241000191291 Abies alba Species 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/04—Casing heads; Suspending casings or tubings in well heads
- E21B33/0407—Casing heads; Suspending casings or tubings in well heads with a suspended electrical cable
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/128—Adaptation of pump systems with down-hole electric drives
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/007—Devices for relieving mechanical stress
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/013—Sealing means for cable inlets
Landscapes
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Connector Housings Or Holding Contact Members (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Earth Drilling (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Motor Or Generator Frames (AREA)
Abstract
A load bearing assembly for suspending a load from a well head assembly is described. The well head (6) assembly is of the type having a connector (8) for suspending jointed production tubing there from and a fluid to air connector (7) which can seal around an electrical conductor (4) extending there-through. The electric conducting core (17) is spliced onto the electrical conductor (4) which extends through the penetrator (7).
Description
Technical field
The present invention relates to a kind of for the bearing assembly at well by load suspension, and especially, the present invention relates to a kind of for by load from electromechanical cable or the suspended assembly of power cable that encapsulated by pipeline.The electromechanical cable be a kind of can conduct power and the cable of bearing load and own wt thereof.Generally, the electromechanical cable comprise by the external jacket of screw winding around conductive core, the weight that the weight that described external jacket can either support cable (core body and sheath) again can bearing load, described load is supported in the lower end of cable.The power cable encapsulated by pipeline comprises the pipeline of coiling, and wherein independently power cable extends through the windable pipeline and wherein is provided with the certain-length of the pipeline of battery core body, around described battery core body, links pipe box is arranged.
Background technology
In oil and gas industry, part of appliance need to be suspended in well usually.For example, pump assembly (comprising lower hole pump and motor) may need to be placed in well so that help rises to fluid ground from bottom.The critical piece of exemplary configurations as shown in Figure 1.According to the conventional practice experience, pump assembly (1) is attached on the lower end that connects tubing string (2), thereby makes the connection tubing string that the pump assembly is remained on to the appropriate position in well (3).Connecting tubing string normally produces with tubing string and comprises a series of rigid conduit section sections that are linked together.For power being offered to the pump assembly.Along connecting, the cast iron holder is extended and passed through to production with the outside of tubing string to cable (4) or stretching steel band (5) is clamped to described connection production with on tubing string, thereby make the weight of this production with the tubing string supporting cable.The lower end of cable is connected to the pump assembly.
Produce and be draped from well head (6) by connector (8) with tubing string (2), thereby make fluid upwards to flow and to flow through the passage (9) well head with pipeline along producing from bottom.Well head is the assembly to being sealed with the top of the annular section between pipeline between well sleeve and production at well sleeve top place.Connector (8) has taper outer profile and threaded endoporus.Thereby producing top with tubing string also is provided with screw thread and makes it can be screwed in connector (8).Connector is seated in sloped footing, in order to will produce with tubing string, is suspended in the well sleeve.
The drilling tree (Christmas tree) (Fig. 1 is not shown) that is connected to the well head top comprises that the valve for fluid being caused to well or drawing from well arranges in order to when needed well is sealed.
Cable (4) the position that is close to well head (6) below with connect production and separate with tubing string (2) and extend through independently fluid to air (fluid to air) connector (7).Described fluid to air connector allows cable to extend to external environment condition from well, has prevented that fluid from flowing between well and external environment condition simultaneously.
In described industry, used multiple fluid to air connector.For example, the form that fluid to air connector can rubber seal exists, and described seal can the ring-type mode be disposed in around cable and can be compressed in order to be sealed in around cable.
Yet, for the purpose of reliability, fluid is to air connector (7) penetration device normally.Penetration device is well-known in production of hydrocarbons technique and generally includes steel cylinder, and cable extends through described steel cylinder, and the space between cylinder inwall and cable is sealed by epoxy resin, elastic body filler or similar substance.Steel cylinder has smooth external surface, and seal can be easy to be formed on described external surface peripheral, or another kind of optional mode is, described steel cylinder has recess in order to O shape ring is set, and described O shape ring is sealed in the smooth holes be arranged in well head.The wide material sources of this penetration device, for example can be from Remote Marine Systems, ITT Cannon, Teledyne D.G..O'Brien, Quick Connectors Inc, or Diamould.
Because the fault that fluid occurs to air connector (7) will be damaged the ability that well head is tolerated well pressure, so this connector is the safety-critical parts.Therefore, in exemplary configurations, the penetration device used is manufactured and the part of cable is extended through wherein.At squadron of factory seal, tested subsequently.The fluid that extends through penetration device to the lower end of air connector is spliced to the fluid of pump assembly subsequently on the spot to the upper end of air connector.In this way, realized the positiver sealing to air connector through this fluid.
With this conventional arrange of the fluid that supplies the mobile passage (9) of well fluids to separate through well head to air connector (7), be widely used, this is because the existence of power cable can not hinder the operation of drilling tree valve, so this valve can be easy to sealing in order to seal as required this well.The conventional method on pipeline for connection production in well that the pump assembly is arranged on, make when needs are safeguarded or repaired the pump assembly and will use expensive workover rig in order to remove and reinstall the production pipeline.This technique is also consuming time.
US 5,670,747 disclosed a kind of for submersible electric pump is arranged on to the equipment in oil well.At US 5,670, in 747, produce and extend to submersible electric pump with pipeline from well head, that is, submersible electric pump uses pipeline suspended from well head by production.In use, the fluid be pumped marches to the well head of producing with in pipeline from pump.One or more packers are arranged on a plurality of depths in well in order to sealed with the annular section between pipeline and well sleeve producing.Electric power is transferred into submersible electric pump via serial parts, and described serial parts comprise well head penetration device, submersible electric pump (ESP) cable, packer penetration device and motor leads extension.ESP cable and motor leads extension are attached to be produced with on the outside of pipeline.Cable and motor leads extension comprise the external metallization armouring part of rigidity substantially, and the major function of described armouring part is that the battery core body for cable provides abrasion resistance and some mechanical protections.Yet the external metallization armouring part of rigidity is not intended to the axial load that supporting applies substantially, can't be supported yet.In fact, replace the weight with cable supporting pump assembly, pump assembly and cable have to produce along its whole length uses pipe-supporting.
Affiliated field has also proposed other optional methods of installation pump assembly in order to avoid expensive cost and the pump assembly is arranged on to the time spent on duct coupling.This method comprises the pump assembly is arranged on the end of windable pipeline or is arranged on the end of electromechanical cable.In the situation that use the windable pipeline, with thinking that the pump assembly provides fluid to the air connector of power extend along the outside of windable pipeline and be secured on the described outside in the mode identical with duct coupling, perhaps be supported in this windable pipeline, realizing as the power cable encapsulated by pipeline.
These methods need to stop and support at the well head place device of this windable pipeline or electromechanical cable, and also need fluid is passed by certain route guidance to air connector the device of well head.
The conventional method that stops and support windable pipeline and mechanical cable is well-known, and this includes, but is not limited to use wedge block, taper or the pipeline suspender that is fixed, concentric taper rope socket, fall into style ferrules, crude zinc pod, wedge shape pod, collet etc.
For by a fixed line by electric conductor guiding through for the well head this respect, in the situation that fluid to air connector is arranged on the windable pipeline outside, the mode that fluid to air connector can be identical with duct coupling is extended by a fixed line.Yet this method is but seldom used, this be because all the other conventional duct couplings to compare advantage limited.In the situation that use power cable or the electromechanical cable encapsulated by pipeline, the method for current known use has two kinds.
At first, be arranged on for hanging to produce with the tapered profiles of tubing string and the power cable that is used for being encapsulated by pipeline or electromechanical cable, being suspended on together with the adapter of well and using in well head.Electric conductor extends through well head and drilling Shu center by a fixed line subsequently, and leaves via fluid to the air connector that is positioned at drilling tree valve top.Another kind of optional mode is, wherein passed on the top of setting to drilling by screw threaded containing the suspender of pressing chamber (pressure containing chamber) and penetration device, and the power cable encapsulated by pipeline or electromechanical cable are from wherein being draped and extending through thus drilling tree and well head.Electric conductor extends through penetration device.All, and the pipeline packaging part also, extends through drilling tree valve by a fixed line to electric conductor in some cases in all cases, and this makes and can't utilize minimum (master) valve be positioned on the drilling tree directly above the well head flange, to isolate this well.Barrier wells is seriously limited in order to carry out the ability of General Maintenance.Further, the whole drilling tree that is positioned at well head flange top has been stood the effect of well pressure, and this has increased the risk that well fluids is leaked.
Further, for the power cable that will be encapsulated by pipeline or electromechanical cable, from being arranged on being used in well head, hang production for the suspended required adapter of the tapered profiles of pipeline, this adapter of a variety of sizes/types must be provided.This is that a kind of adapter can't be applicable to all types of well heads because the type of well head is a lot.In the common bulky pump of these adapters, in order to adapt to, produce with the greatest differences existed on diameter between pipeline (tapered profiles is designed to coordinate with described pipeline) and the power cable encapsulated by pipeline or electromechanical cable.Therefore, suspended for power cable or the tapered profiles of electromechanical cable from conventional well head that will be encapsulated by pipeline, need a large amount of different adapters of storing.
Summary of the invention
The present invention produces just in view of this consideration.
According to the present invention, provide a kind of for the bearing assembly that load is suspended from wellhead component.This wellhead component used has connector, so that the production that will connect is suspended from it with pipeline, and has fluid to air connector, around the salable electric conductor extending through wherein of described connector.Bearing assembly comprises the First section, described First section comprises the part of pipeline, the described part of pipeline is provided with the first interface unit that is connected to the connector of described wellhead component for the described part by pipeline, described bearing assembly further comprises the second interface unit of the bearing part of second section for described First section being attached to described bearing assembly, the described bearing part of described second section is suspended so that the load the supporting well from described the second interface unit, described second section further comprises the electric conductor part for supplying power to load and being extended along the length of the described bearing part of described second section, there is electric connection in described electric conductor part with fluid to air connector, described fluid to air connector extends and in use extends away from described the second interface unit and towards described well head and extend along described First section at least in part in described First section outside.
Described second section be electromechanical cable or the power cable that encapsulated by pipeline preferably.
The invention has the advantages that: described assembly can be used together with conventional wellhead component.Described bearing assembly can with at present pump arrangement of components lucky identical mode of the widely used mode of institute when being positioned at the wellhole connected on the tubing string end is connected to well head.
Further, do not need to use new unverified method to make fluid to air connector extend to ground by a fixed line from well.Fluid to air connector can be by standard industrial trust penetration device or known at the fluid of use, to air connector, by a fixed line, from well, extend to ground by any other use.Therefore, the user can recover such confidence, and fluid to air connector is set without extending through drilling, and can believe the integrality of fluid to air connector sealing on every side.
In addition, the invention enables without a large amount of dissimilar assemblies are set and adapt to dissimilar well head and suspender.This is because the producer's self pipeline suspender can be used to hang the described part of pipeline, and only needs to use relatively a small amount of line size, and described second interface unit of assembly of the present invention can only arrange for these a small amount of sizes.
Therefore, on power cable or electromechanical cable that the present invention allows load is encapsulated by pipeline as submersible electric pump is configured in, and not there will be the problems referred to above of known system.Therefore the pump that has configured duct coupling can become and configured the power cable that encapsulated by pipeline or the pump of electromechanical cable, and can not affect the function of existing wellhead component.
In one embodiment, described fluid to air connector comprises first and second portion, the described electric conductor part of described second section of described first and described bearing assembly is in aggregates, and described second portion in use is attached to described first and extends towards described fluid to air connector.Therefore described fluid is the described electric conductor extension partly of described second section of described bearing assembly to described first integral part of air connector, and described extension extends beyond the described top of the described bearing part of described second section.
In this way, can in factory, produce described fluid to air connector as described in penetration device, and electric conductor extends through wherein, as in the convention of current acceptance, thereby make the sealing provided by described fluid to air connector can be tested before use.Extend through described fluid to the described lower end of the described electric conductor of air connector and can be coupled to subsequently on the described electric conductor of described second section that extends through described bearing assembly, this is for example to realize by splicing or by the well-known to one skilled in the art other technologies that fluid to air connector is linked together.The advantage of doing like this is: can use at present available fluid to air connector, particularly penetration device.
Another kind of optional mode is that described fluid to air connector can be attached at described the second interface unit place the described electric conductor part of described second section of described bearing assembly.In this case, extending through described fluid to the downward whole process of described electric conductor of air connector extends to described the second interface unit and therefore has the length similar to the described First section of described bearing assembly.
Advantageously, described fluid to air connector is secured on the described First section of described bearing assembly at least one position of the length along described fluid to air connector partly, thereby makes described first support at least in part the weight of described fluid to air connector.Alternatively, described fluid to air connector is secured on the described First section of described bearing assembly in a plurality of positions along described fluid to air connector length.In this way, described fluid to air connector without under tension force and even without supporting himself weight.
Described second section of described bearing assembly can be the electromechanical cable.In this case, described electric conductor part can comprise that conductive core and described bearing part can comprise the external bearer sheath, and described sheath is round described conductive core.Described conductive core can comprise be insulated material around three conductive wires.Described external bearer sheath can comprise the wire of screw winding.Advantageously, be provided with two or more concentric screw winding metal wire layers.Described different layers can be reeled along relative direction (to reeling).Generally, described wire is steel armouring wire.
Described second power cable that section alternatively can be encapsulated by pipeline of described bearing assembly.The described power cable encapsulated by pipeline can be the coiling pipeline, wherein said electric conductor partly comprises the certain-length that extends through the windable pipeline and the conductive core separated with the windable pipeline of described certain-length, and the windable pipeline of described certain-length is described bearing part.Yet described conductive core can for example be attached to described windable pipeline by clip.Another kind of optional mode is, the described power cable encapsulated by pipeline can comprise the battery core body, described battery core body by pipe box around and be linked to described pipe box.In any situation, described conductive core can comprise one or more conductive wires.For example, one or three conductive wires can be set in order to be respectively used to single-phase or three phase mains, as one of ordinary skill in the art are to be appreciated that ground.
Preferably, the described part of pipeline is extended and is had a cylindrical side wall that limits passage along the whole length of the described First section of described bearing assembly, described passage has the first openend and the second openend, and described first end is to be provided with described the first interface unit in order to the described part of pipeline is connected to the end of the described connector of described wellhead component.For example, described First section can be produced the form existence by a part of section section of pipeline.The advantage of doing like this is, described production is easy to obtain by section's section of pipeline.Therefore well fluids can flow in described First section, upwards flow and flow out described first continuous described the first openend (upper end in use procedure) through described pipeline and at described well head place in described the second open end (lower end in use procedure).In certain embodiments, described the second openend is closed and in the described sidewall of the described part of pipeline, at least one opening is set.Described opening can a plurality of perforation form exist.Described the second openend can or be sealed by cap or plunger by described the second interface unit.The described part of described opening flow ipe that in this way, can be by being arranged in described sidewall through fluid.This can alleviate the fluid stream/turbulent flow around described the second interface unit, and this further can alleviate wearing and tearing, for example appears at the abrasion on described the second interface unit.
Another kind of optional mode is that the described First section of described bearing assembly can further comprise the foot of described second openend of the described part that is connected to pipeline.But described second openend of the described part of described foot closed conduct also extends the length that reaches the length of described First section and exceed the described part of pipeline simultaneously.Similarly, can in the described sidewall of the described part of pipeline, at least one opening be set, for example a plurality of perforation, in order to allow in the described part of well fluids flow ipe.In this way, described First section can comprise upper end, and driving and be similar to a part of section section of producing with pipeline in described upper end, thereby makes it can be easy to be connected to well head, but can comprise lower end, and described lower end can present various ways.For example, described lower end, or foot, can be solid block or bar, and described solid block or bar only make the described First section of described bearing assembly have to provide than described upper end reflects the larger length of length of producing by a part of section section of pipeline.
Alternatively, the described First section of described bearing assembly can be included on the sidepiece relative with the described part of pipeline of described the second interface unit extends the second portion away from the pipeline of described the second interface unit, the described second portion of pipeline has the passage extended through wherein, and described passage exists and is communicated with the described passage of the described first that extends through pipeline.This layout also makes fluid can enter in the described first of pipeline, and can not cause producing serious wearing and tearing on described the second interface unit.The described second portion of pipeline can be with the described first of pipeline in aggregates or its can be connected to described the second interface unit.
Another kind of optional mode is that described the second interface unit can be positioned in the described of described First section of described bearing assembly and locate bottom.
Described the second interface unit is can be with the described First section of described bearing assembly in aggregates and/or in aggregates with the described bearing part of described second section of described bearing assembly.Another kind of optional mode is that described the second interface unit can be attached to releasedly the described First section of described bearing assembly and be attached to releasedly the described bearing part of described second section of described bearing assembly.In the situation that described the second interface unit is connected releasedly, can use the conventional power cable encapsulated by pipeline of pipeline, routine for production or the electromechanical cable of routine.In this case, described the second interface unit can comprise the first coupling device of the described First section for described the second interface unit being attached to described bearing assembly and for the second coupling device of the described bearing part of described second section of described the second interface unit being attached to described bearing assembly.Described the first coupling device can comprise the screw thread engaged for the respective threaded on the described First section with being arranged on described bearing assembly, but other devices should be also apparent for one of ordinary skill in the art.
Described the second coupling device can comprise the known any suitable device of one of ordinary skill in the art.In the situation that described second section of described bearing assembly is the electromechanical cable with external bearer sheath, described the second coupling device can be such as comprising wedge shape clip, concentric taper rope socket, sunken style ferrules, crude zinc pod, wedge shape pod etc.Concentric taper rope socket is normally preferred, and comprises a series of concentric conical surfaces, and described external bearer sheath is clamped between described conical surface.
In the situation that the power cable that elongated hanging element is encapsulated by pipeline, described the second coupling device can such as comprise wedge shape clip, taper or fixing pipeline suspender, with the chuck of the described engaged at end of described pipeline or nut etc.
Described the first interface unit can comprise the screw thread on the described part that is positioned at pipeline, described screw thread can with the described pipeline suspender that is positioned at described well head on be threadedly engaged with accordingly.Yet other connectors that are connected to described well head for the described part by pipeline will be known for one of ordinary skill in the art.
The accompanying drawing explanation
Now by only in conjunction with example and with reference to accompanying drawing, present invention is described, wherein:
Fig. 1 is the schematic diagram of the pump of routine in well;
Fig. 2 is the schematic diagram according to bearing assembly of the present invention;
Fig. 3 shows the amplification profile through the second connector of bearing assembly shown in Fig. 2; With
Fig. 4 shows through the amplification profile of the second connector according to another embodiment of the present invention.
The specific embodiment
Fig. 2 shows well head (6), and bearing assembly of the present invention is suspended from described well head.This well head is to be widely used for hanging in well the well head that the general type of tubing string is used in the production connected, and there is connector (8), path (9) and penetration device (7), produce and be connected to described connector with the top of tubing string, well fluids can flow through described path, electric conductor (4) extends through described penetration device, and described penetration device is sealed in around described electric conductor and provides sealing between well environment and external environment condition.Described penetration device is manufactured and have the electric conductor (4) extended through wherein, thereby it can be spliced on electric conductor in order to power for lower hole equipment bottom on the spot.
Assembly of the present invention comprises that described First section has first end (11) and relative the second end (12) with the First section of the form existence of the part of pipeline (10).Described first end (11) is connected to well head (6) by the connector (8) of well head.Connector (8) is in conjunction with the described that connector of Fig. 1.Upper and the synergistic screw thread that be positioned on connector (13) in the end (12) of the described part of relative the second end (12) by being positioned at pipeline (10) is connected to connector (13).More particularly, the end of the pipeline of described length is threaded and is screwed on the threaded recess (22) that is arranged in connector (13), as can see from Figure 3.
Second section of bearing assembly of the present invention presents the form of electromechanical cable (15).This electromechanical cable is connected to connector (13) and suspended from described connector.Electromechanical cable (15) extends in well and at it and carries the pump assembly on (not shown) bottom.Electromechanical cable (15) comprises bearing part (16) and current-carrying part (17) (equally referring to Fig. 3).Current-carrying part formed the core body of electromechanical cable and comprise be insulated material around one or more electric metal silks.Bearing part (16) comprises the external bearer sheath, and described external jacket exists with the form of opposing connection steel armouring two concentric layers wiry (16a, 16b).This electromechanical cable is that affiliated field is well-known.
External bearer sheath (16) is connected to connector (13) by concentric taper rope socket, and described concentric taper rope socket comprises a series of concentric centrums (14), as will discuss ground in more detail below in conjunction with Fig. 3.
The external bearer sheath (16) of electromechanical cable (15) ends at connector (13) and locates, and conductive core (17) cuts across connector (13), extend beyond the carrying sheath (16) end and upwards towards well head, extend.Conductive core (17) partly upwards extends and is spliced to subsequently electric conductor (4) above along the described part of pipeline (10), and described electric conductor extends through penetration device (7).
The part (part exposed) of the end that extends beyond external bearer sheath (16) of conductive core (17) and the electric conductor (4) that extends through penetration device (7) are clamped on the described part of pipeline (10) by fixture (19), thereby the weight that makes the expose portion of described conductive core (17) and electric conductor (4) is by the described part supporting of pipeline (10).
From Fig. 3, can observe in more detail between being connected between the external bearer sheath (16) of electromechanical cable (15) and connector (13).Connector (13) comprises three centrums (14a, 14b, 14c), described centrum provides concentric conical surface, the steel armouring of the opposing connection of external bearer sheath (16) two concentric layers wiry (16a, 16b) are clamped between described concentric tapered surface, thus external jacket (16) are fastened on connector (13).This is known as the concentric tapered rope socket sometimes.The connector (13) that is connected in this way external bearer sheath (16) be seated in subsequently be arranged in connector (13) recess so that electromechanical cable (15) is suspended from connector (13).
Can see, conductive core (17) extends upward at least in part through connector (13) and along the described part of pipeline (10) directly.
Although relative second end (12) of the described part of pipeline (10) is opening, in the time of in pipeline is screwed on connector, connector (13) has sealed this openend (12) of pipeline, as can see from Figure 3.Perforation (20) is formed in the sidewall of pipeline (10) in order to allow in the well fluids flow ipe.Perforation (20) can be arranged on a plurality of somes place along the length of the described part of pipeline (10).
The fluid entering part of the described part of pipeline is arranged on and makes the wearing and tearing that alleviated connector (13) further from the position of connector (13), and this can appear in the embodiment that connector do not seal relative the second end (12).This is because in these embodiments, fluid, by the described part of its relative the second end (12) flow ipe, has formed a large amount of turbulent flows on every side at connector (13) thus.Particle, for example be in the sand in fluid, can produce abrasion to connector (13).
In the optional layout of another kind, relative second end (12) of pipeline can be by permanent closure, and this is for example to realize by being positioned at the cap on pipe end or being configured as solid foot by the second end that this is relative.Under latter event, perforation (20) is disposed in solid foot top.
Fig. 4 shows another embodiment similar with the embodiment mentioned above shown in Fig. 4 to Fig. 3 of the present invention.Feature like similar Reference numeral representation class.In this embodiment, connector (13) is formed with the threaded hole (23) through wherein.The described part of pipeline (10) is screwed in hole (23) in order to the described part of pipeline is connected to connector.In addition, the second portion of pipeline (21) is connected to connector (13) by the screw thread on the external surface that is located thereon end (24).The passage that extends through this second portion of pipeline (21) therefore exists and is communicated with the passage of the first that extends through pipeline (10).Well fluids can be by pipeline the lower end (25) of second portion enter in this second portion (21) and from this second portion (21) of pipeline and flow to the first of pipeline (10) and therefore flow out well.
This is that another kind will be placed on further from the mode of the position of connector (13) for the fluid entering part of the described part of pipeline, and has avoided thus connector excessively to be denuded.
In another embodiment of the present invention, the power cable encapsulated by pipeline is used to the pump assembly is suspended in well.In this case, substantially as described above, the exception part is that carrying pipeline that connector (13) is provided with the power cable in order to being encapsulated by pipeline is connected to the device of connector to bearing assembly of the present invention.The power cable encapsulated by pipeline is therefore suspended from connector (13), hang with above to be combined the described mode of electromechanical cable (15) similar.The current-carrying part of the power cable encapsulated by pipeline also extends through connector continuously, extend beyond the end of carrying pipeline and upwards extend towards well head, as above in conjunction with conductive core (17) describe.
One of ordinary skill in the art will be easy to above-mentioned example is made to other variations.For example, the conductive core (17) of electromechanical cable or the power cable that encapsulated by pipeline can end at connector (13) and locates and extend through the electric conductor (4) of penetration device (7) and can extend downward connector (13).In this case, conductive core (17) can locate to be attached to electric conductor (4) in connector (13).Another kind of optional mode is that conductive core (17) can be in aggregates with the electric conductor that extends through penetration device (7) (4).
Claims (14)
1. one kind for the bearing assembly that load is suspended from wellhead component, this wellhead component used has connector, so that the production that will connect is suspended from it with pipeline, and there is fluid to air connector, described fluid is around the salable electric conductor extending through wherein of air connector, wherein said bearing assembly comprises the First section, described First section comprises the part of the production of connection with pipeline, the production connected is provided with and is connected to the first interface unit of the connector of described wellhead component for the production by connection by the described part of pipeline by the described part of pipeline, described bearing assembly further comprises the second interface unit of the bearing part of second section for described First section being attached to described bearing assembly, the described bearing part of described second section is suspended so that the load the supporting well from described the second interface unit, described second section further comprises the electric conductor part for supplying power to load and being extended along the length of the described bearing part of described second section, there is electric connection in described electric conductor part with a cable, described cable is in the outside extension of described First section and in use at least in part along described First section extension away from described the second interface unit and towards described well head extension.
2. assembly according to claim 1, wherein, described cable comprises first and second portion, the described electric conductor part of described second section of described first and described bearing assembly is in aggregates, and described second portion in use is attached to described first and extends towards described fluid to air connector.
3. assembly according to claim 1, wherein, described cable is attached to the described electric conductor part of described second section of described bearing assembly at described the second interface unit place.
4. according to the described assembly of any one in claim 1-3, wherein, described cable is secured on the described First section of described bearing assembly at least one position of the length along described cable, thereby makes described First section support at least in part the weight of described cable.
5. according to the described assembly of any one in claim 1-3, wherein, described second section of described bearing assembly is the electromechanical cable, the described electric conductor of described electromechanical cable partly comprises that the described bearing part of conductive core and described electromechanical cable comprises the external bearer sheath, and described sheath is round described conductive core.
6. assembly according to claim 5, wherein, described the second interface unit comprises a series of concentric conical surfaces, described external bearer sheath is clamped between described conical surface.
7. according to the described assembly of any one in claims 1 to 3, wherein, described second power cable that section is encapsulated by pipeline of described bearing assembly, in this power cable, (a) conductive core extends through the certain-length of windable pipeline and separates with the windable pipeline of described certain-length, or (b) conductive core by pipeline around and be linked to described pipeline.
8. according to the described assembly of any one in aforementioned claim 1-3, wherein, the production of described connection is extended and is had a cylindrical side wall that limits passage along the whole length of the described First section of described bearing assembly by the described part of pipeline, described passage has the first openend and the second openend, and described the first openend is to be provided with described the first interface unit in order to the production of connection is connected to the end of the described connector of described wellhead component by the described part of pipeline.
9. assembly according to claim 8, wherein, described the second openend is closed and in the described sidewall of production by the described part of pipeline connected, at least one opening is set.
10. assembly according to claim 8, wherein, described the second interface unit is arranged on described second open end of the production of connection by the described part of pipeline.
11. the assembly of stating according to Claim 8, wherein, the described First section of described bearing assembly further is included in extension on production described the second interface unit and described connection the sidepiece relative with the first of pipeline and uses the second portion of pipeline away from the production of the described connection of described the second interface unit, the production of described connection has with the described second portion of pipeline the passage extended through wherein, and described passage is communicated with the described passage existence of the first of pipeline with the production that extends through described connection.
12. according to the described assembly of any one in claims 1 to 3, wherein, the production connected has by the described part of pipeline the cylindrical side wall that limits passage, described passage has the first openend and the second openend, described the first openend is to be provided with described the first interface unit in order to the production of connection is connected to the end of the described connector of described wellhead component by the described part of pipeline, and wherein in the described sidewall of production by the described part of pipeline connected, be provided with at least one opening, described First section further comprises foot, the production that described foot is connected to connection with described second openend of the described part of pipeline in order to seal described the second openend, and the while extends to the length of the described part of the production use pipeline that exceeds described connection along the length of described First section.
13. according to the described assembly of any one in aforementioned claim 1-3, wherein, described the second interface unit is attached to the described First section of described bearing assembly releasedly, and is attached to releasedly the described bearing part of described second section of described bearing assembly.
14., according to the described assembly of any one in claims 1 to 3, wherein, the described First section of described the second interface unit and described bearing assembly is integrally formed.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP08252555A EP2149672A1 (en) | 2008-07-28 | 2008-07-28 | Load bearing assembly |
| EP08252555.1 | 2008-07-28 | ||
| PCT/GB2009/001763 WO2010012979A1 (en) | 2008-07-28 | 2009-07-17 | Load bearing assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102112698A CN102112698A (en) | 2011-06-29 |
| CN102112698B true CN102112698B (en) | 2014-01-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200980129721.XA Expired - Fee Related CN102112698B (en) | 2008-07-28 | 2009-07-17 | Load bearing assembly |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US8297346B2 (en) |
| EP (2) | EP2149672A1 (en) |
| CN (1) | CN102112698B (en) |
| AU (1) | AU2009275694B2 (en) |
| BR (1) | BRPI0916747A2 (en) |
| CA (1) | CA2731545C (en) |
| EA (1) | EA019228B1 (en) |
| EG (1) | EG26846A (en) |
| WO (1) | WO2010012979A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8794332B2 (en) * | 2011-05-31 | 2014-08-05 | Vetco Gray Inc. | Annulus vent system for subsea wellhead assembly |
| US20140178185A1 (en) * | 2012-12-21 | 2014-06-26 | United Technologies Corporation | Egress seal assembly |
| CN103452529B (en) * | 2013-07-08 | 2016-01-27 | 中国海洋石油总公司 | A kind of co-well oil-pumping and water-injecting technique oil-extraction electric pump assembly |
| WO2015176172A1 (en) * | 2014-02-18 | 2015-11-26 | Athabasca Oil Corporation | Cable-based well heater |
| US10465473B2 (en) * | 2015-02-13 | 2019-11-05 | Schlumberger Technology Corporation | Annular safety valve pull through device |
| US20180216434A1 (en) * | 2017-01-24 | 2018-08-02 | Drover Energy Services Llc | Telemetry cable bypass |
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| US5670747A (en) * | 1994-02-03 | 1997-09-23 | D.G. O'brien, Inc. | Apparatus for terminating and interconnecting rigid electrical cable and method |
| CA2222321A1 (en) * | 1996-12-03 | 1998-06-03 | Lehman T. Reed | Elevated electrical connector assembly |
| US6530433B2 (en) * | 1999-12-08 | 2003-03-11 | Robbins & Myers Energy Systems, L.P. | Wellhead with ESP cable pack-off for low pressure applications |
| CN2620409Y (en) * | 2003-04-19 | 2004-06-09 | 刘华伟 | Cable sealing protector of oil submersible pump well head |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US3424485A (en) | 1967-04-24 | 1969-01-28 | Reda Pump Co | Cable attaching assembly |
| US4913239A (en) | 1989-05-26 | 1990-04-03 | Otis Engineering Corporation | Submersible well pump and well completion system |
| US5626190A (en) * | 1991-02-06 | 1997-05-06 | Moore; Boyd B. | Apparatus for protecting electrical connection from moisture in a hazardous area adjacent a wellhead barrier for an underground well |
| US5297943A (en) | 1993-03-26 | 1994-03-29 | Baker Hughes Incorporated | Electrical submersible pump discharge head |
| US5722844A (en) * | 1996-04-04 | 1998-03-03 | Schraeder; Leo Bryce | Wellhead junction system |
| US5762135A (en) * | 1996-04-16 | 1998-06-09 | Moore; Boyd B. | Underground well electrical cable transition, seal and method |
| US6089832A (en) | 1998-11-24 | 2000-07-18 | Atlantic Richfield Company | Through-tubing, retrievable downhole pump system |
| US6688386B2 (en) * | 2002-01-18 | 2004-02-10 | Stream-Flo Industries Ltd. | Tubing hanger and adapter assembly |
| CA2382904C (en) * | 2002-04-22 | 2005-04-12 | Daniel J. Riddell | Wellhead production pumping tree with access port |
| US6955218B2 (en) * | 2003-08-15 | 2005-10-18 | Weatherford/Lamb, Inc. | Placing fiber optic sensor line |
| GB0801156D0 (en) * | 2008-01-23 | 2008-02-27 | Pump Tools Ltd | Apparatus and method |
-
2008
- 2008-07-28 EP EP08252555A patent/EP2149672A1/en not_active Ceased
-
2009
- 2009-07-17 US US12/737,574 patent/US8297346B2/en not_active Expired - Fee Related
- 2009-07-17 CA CA2731545A patent/CA2731545C/en not_active Expired - Fee Related
- 2009-07-17 AU AU2009275694A patent/AU2009275694B2/en not_active Ceased
- 2009-07-17 EP EP09802570.3A patent/EP2315906B1/en active Active
- 2009-07-17 CN CN200980129721.XA patent/CN102112698B/en not_active Expired - Fee Related
- 2009-07-17 BR BRPI0916747A patent/BRPI0916747A2/en not_active IP Right Cessation
- 2009-07-17 EA EA201100256A patent/EA019228B1/en not_active IP Right Cessation
- 2009-07-17 WO PCT/GB2009/001763 patent/WO2010012979A1/en active Application Filing
-
2011
- 2011-01-24 EG EG2011010148A patent/EG26846A/en active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5670747A (en) * | 1994-02-03 | 1997-09-23 | D.G. O'brien, Inc. | Apparatus for terminating and interconnecting rigid electrical cable and method |
| CA2222321A1 (en) * | 1996-12-03 | 1998-06-03 | Lehman T. Reed | Elevated electrical connector assembly |
| US6530433B2 (en) * | 1999-12-08 | 2003-03-11 | Robbins & Myers Energy Systems, L.P. | Wellhead with ESP cable pack-off for low pressure applications |
| CN2620409Y (en) * | 2003-04-19 | 2004-06-09 | 刘华伟 | Cable sealing protector of oil submersible pump well head |
Also Published As
| Publication number | Publication date |
|---|---|
| US20110120696A1 (en) | 2011-05-26 |
| AU2009275694A1 (en) | 2010-02-04 |
| AU2009275694B2 (en) | 2016-02-04 |
| EP2149672A1 (en) | 2010-02-03 |
| CA2731545C (en) | 2017-02-28 |
| WO2010012979A1 (en) | 2010-02-04 |
| EP2315906B1 (en) | 2020-04-29 |
| EP2315906A1 (en) | 2011-05-04 |
| EA019228B1 (en) | 2014-02-28 |
| US8297346B2 (en) | 2012-10-30 |
| CN102112698A (en) | 2011-06-29 |
| CA2731545A1 (en) | 2010-02-04 |
| EG26846A (en) | 2014-10-29 |
| BRPI0916747A2 (en) | 2015-11-03 |
| EA201100256A1 (en) | 2011-10-31 |
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